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US3835342A
Expired / Lapsed
US
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Radiant energy collector or reflector
Assignee: Individual
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Filing: 1973-05-21
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Granted: 1974-09-10
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Expires: 1993-05-21
Abstract
Abstract A light projector particularly suitable for automobile headlights which will direct a plurality of concentric light beams of different intensities substantially without energy loss. The light projector is provided with a stepped rear reflector of parabolic shape or partially or entirely of the shape of an anamorphosscope. It also is provided with a first front reflector of parabolic shape and a second front reflector disposed inside of the first front reflector of substantially spherical shape. The first front reflector may also be partially or entirely of the shape of an anamorphoscope corresponding to that of the rear reflector. The second front reflector substantially obscures the light source from an observer above a predetermined plane such as a horizontal plane. This will minimize the danger of glare to an approaching driver. On the other hand it will direct substantially all of the light onto the road and permit the beam to reach farther out with the same amount of candle power. The projector may also be used to direct any radiant energy such as electromagnetic waves or sound waves. Additionally it may be used not only to reflect or project radiant energy but also for collecting radiant energy into a focal point.
Inventors
- 👤 M Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:30
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/32; H01K1/325; F; F21; F21S; F21S41/00; F21S41/30; F21S41/32; F21S41/321; F21S41/323; F21S41/36; F21S41/365; F21S41/40; F21S41/43
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
213 words
A radiant energy collecting or reflecting system for collecting or reflecting radiant energy from or into a predetermined area, said system comprising: a. a first rear reflector of substantially parabolic shape, said first rear reflector having a focal point toward which to direct incoming radiant energy or from which to direct radiant energy outwardly; b. a second rear reflector of substantially parabolic shape disposed between said focal point and said first rear reflector, said second rear reflector having a focal point substantially coinciding with that of said first rear reflector whereby said rear reflectors jointly form a stepped reflector; c. a first front reflector of substantially parabolic shape having its focal point substantially coinciding with that of said rear reflectors, said first front reflector being apertured to pass light therethrough and being disposed for intercepting substantially all energy rays which would originate from said focal point and pass through the opening of said first rear reflector; and d. a second front reflector of substantially spherical shape forming a portion of a sphere having its origin substantially coinciding with said focal points, said second front reflector being so disposed as to intercept all rays originating from said focal points and directed through the opening of said first front reflector and above a predetermined plane.
Claim 2
Dependent Claim
213 words
A radiant energy collecting or reflecting system for collecting or reflecting radiant energy from or into a predetermined area, said system comprising: a. a first rear reflector of substantially parabolic shape, said first rear reflector having a focal point toward which to direct incoming radiant energy or from which to direct radiant energy outwardly; b. a second rear reflector of substantially parabolic shape disposed between said focal point and said first rear reflector, said second rear reflector having a focal point substantially coinciding with that of said first rear reflector whereby said rear reflectors jointly form a stepped reflector; c. a first front reflector of substantially parabolic shape having its focal point substantially coinciding with that of said rear reflectors, said first front reflector being apertured to pass light therethrough and being disposed for intercepting substantially all energy rays which would originate from said focal point and pass through the opening of said first rear reflector; and d. a second front reflector of substantially spherical shape forming a portion of a sphere having its origin substantially coinciding with said focal points, said second front reflector being so disposed as to intercept all rays originating from said focal points and directed through the opening of said first front reflector and above a predetermined plane.
Claim 3
Dependent Claim
37 words
A reflecting system as defined in claim 1 wherein corresponding portions of said first and second rear reflectors are substantially anamorphic refleCtors, and wherein the corresponding portion of said first front reflector is a substantially anamorphic reflector.
Claim 4
Dependent Claim
24 words
A reflecting system as defined in claim 1 wherein said first and second rear reflectors and said first front reflector are substantially anamorphic reflectors.
Claim 5
Dependent Claim
217 words
A radiant energy reflecting system for directing radiant energy in predetermined directions, said system comprising: a. a radiant energy source; b. a first rear reflector of substantially parabolic shape having its focal point substantially in said energy source; c. a second rear reflector of substantially parabolic shape providing with said first rear reflector a stepped reflector and having its focal point substantially in said energy source, said second rear reflector being disposed between said first reflector and said energy source; d. a first front reflector of substantially parabolic shape disposed ahead of said energy source and having a focal point substantially in said energy source, said first front reflector being disposed to intercept substantially all rays which would otherwise pass through the opening of said first rear reflector, said first and second rear reflectors and said first front reflector having openings disposed in substantially parallel planes; and e. a second front reflector of substantially spherical shape having its origin substantially in said energy source, said second front reflector being disposed within said first front reflector so as to intercept substantially all energy rays which would otherwise pass above a predetermined horizontal plane, whereby said reflecting system will project three concentric light beams of substantially circular shape with substantially no energy being directed above said predetermined horizontal plane.
Claim 6
Dependent Claim
217 words
A radiant energy reflecting system for directing radiant energy in predetermined directions, said system comprising: a. a radiant energy source; b. a first rear reflector of substantially parabolic shape having its focal point substantially in said energy source; c. a second rear reflector of substantially parabolic shape providing with said first rear reflector a stepped reflector and having its focal point substantially in said energy source, said second rear reflector being disposed between said first reflector and said energy source; d. a first front reflector of substantially parabolic shape disposed ahead of said energy source and having a focal point substantially in said energy source, said first front reflector being disposed to intercept substantially all rays which would otherwise pass through the opening of said first rear reflector, said first and second rear reflectors and said first front reflector having openings disposed in substantially parallel planes; and e. a second front reflector of substantially spherical shape having its origin substantially in said energy source, said second front reflector being disposed within said first front reflector so as to intercept substantially all energy rays which would otherwise pass above a predetermined horizontal plane, whereby said reflecting system will project three concentric light beams of substantially circular shape with substantially no energy being directed above said predetermined horizontal plane.
Claim 7
Dependent Claim
35 words
A reflecting system as defined in claim 4 wherein the opening of said first rear reflector and of said first front reflector is closed by a window of a material transparent to the radiant energy.
Claim 8
Dependent Claim
246 words
A radiant energy reflecting system for directing radiant energy in predetermined directions, said system comprising: a. a radiant energy source; b. a first rear reflector having an upper substantially anamorphic reflector portion and a lower portion of substantially parabolic shape having its focal point substantially in said energy source; c. a second rear reflector having an upper substantially anamorphic reflector portion and a lower portion of substantially parabolic shape providing with said first rear reflector a stepped reflector and having its focal point substantially in said energy source, said second rear reflector being disposed between said first reflector and said energy source; d. a first front reflector having an upper substantially anamorphic reflector portion and a lower portion of substantially parabolic shape disposed ahead of said energy source and having a focal point substantially in said energy source, said first front reflector being disposed to intercept substantially all rays which would otherwise pass through the opening of said first rear reflector, said first and second rear reflectors and said first front reflector having openings disposed in substantially parallel planes; and e. a second front reflector of substantially spherical shape having its origin substantially in said energy source, said second front reflector being disposed within said first front reflector so as to intercept substantially all energy rays which would otherwise pass above a predetermined horizontal plane, whereby said reflecting system will project three concentric light beams with substantially no energy being directed above said predetermined horizontal plane.
Claim 9
Dependent Claim
246 words
A radiant energy reflecting system for directing radiant energy in predetermined directions, said system comprising: a. a radiant energy source; b. a first rear reflector having an upper substantially anamorphic reflector portion and a lower portion of substantially parabolic shape having its focal point substantially in said energy source; c. a second rear reflector having an upper substantially anamorphic reflector portion and a lower portion of substantially parabolic shape providing with said first rear reflector a stepped reflector and having its focal point substantially in said energy source, said second rear reflector being disposed between said first reflector and said energy source; d. a first front reflector having an upper substantially anamorphic reflector portion and a lower portion of substantially parabolic shape disposed ahead of said energy source and having a focal point substantially in said energy source, said first front reflector being disposed to intercept substantially all rays which would otherwise pass through the opening of said first rear reflector, said first and second rear reflectors and said first front reflector having openings disposed in substantially parallel planes; and e. a second front reflector of substantially spherical shape having its origin substantially in said energy source, said second front reflector being disposed within said first front reflector so as to intercept substantially all energy rays which would otherwise pass above a predetermined horizontal plane, whereby said reflecting system will project three concentric light beams with substantially no energy being directed above said predetermined horizontal plane.
Claim 10
Dependent Claim
35 words
A reflecting system as defined in claim 6 wherein the opening of said first rear reflector and of said first front reflector is closed by a window of a material transparent to the radiant energy.
Claim 11
Dependent Claim
207 words
A radiant energy reflecting system for directing radiant energy in predetermined directions, sAid system comprising: a. a radiant energy source; b. a first substantially anamorphic rear reflector having its focal point substantially in said energy source; c. a second substantially anamorphic rear reflector providing with said first rear reflector a stepped reflector and having its focal point substantially in said energy source, said second rear reflector being disposed between said first reflector and said energy source; d. a first substantially anamorphic front reflector disposed ahead of said energy source and having a focal point substantially in said energy source, said first front reflector being disposed to intercept substantially all rays which would otherwise pass through the opening of said first rear reflector, said first and second rear reflectors and said first front reflector having opening disposed in substantially parallel planes; and e. a second front reflector of substantially spherical shape having its origin substantially in said energy source, said second front reflector being disposed within said first front reflector so as to intercept substantially all energy rays which would otherwise pass above a predetermined horizontal plane, whereby said reflector system will project three concentric light beams with substantially no energy being directed above said predetermined horizontal plane.
Claim 12
Dependent Claim
207 words
A radiant energy reflecting system for directing radiant energy in predetermined directions, sAid system comprising: a. a radiant energy source; b. a first substantially anamorphic rear reflector having its focal point substantially in said energy source; c. a second substantially anamorphic rear reflector providing with said first rear reflector a stepped reflector and having its focal point substantially in said energy source, said second rear reflector being disposed between said first reflector and said energy source; d. a first substantially anamorphic front reflector disposed ahead of said energy source and having a focal point substantially in said energy source, said first front reflector being disposed to intercept substantially all rays which would otherwise pass through the opening of said first rear reflector, said first and second rear reflectors and said first front reflector having opening disposed in substantially parallel planes; and e. a second front reflector of substantially spherical shape having its origin substantially in said energy source, said second front reflector being disposed within said first front reflector so as to intercept substantially all energy rays which would otherwise pass above a predetermined horizontal plane, whereby said reflector system will project three concentric light beams with substantially no energy being directed above said predetermined horizontal plane.
Claim 13
Dependent Claim
35 words
A reflecting system as defined in claim 8 wherein the opening of said first rear reflector and of said first front reflector is closed by a window of a material transparent to the radiant energy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |